Filter arrangement

ABSTRACT

The invention relates to a filter arrangement having a first busbar, a second busbar and a carrier element, on which at least one electrical filter component is arranged, which is electrically connected to the busbars, wherein the electrical connection of the at least one electrical filter component to at least one of these busbars is realized by mechanical clamping of the carrier element between the first and second busbar.

BACKGROUND OF THE INVENTION

The invention relates to a filter arrangement and a method for producinga filter arrangement.

Electric or electronic filters for interference suppression ofelectrical systems and installations are basically known. In particular,filters are known which in a direct current network filter outhigh-frequency signals which are coupled into direct current paths, inorder to meet the existing requirements with regard to electromagneticcompatibility (EMC) of the electrical system or of the installation(so-called EMC filters).

In particular in electrically driven vehicles, the problem exists thathigh electric currents must be transmitted on busbars between the energystorage (e.g. battery unit) and the electric motor (e.g. currents up to500 A). Therefore, the busbars must have a considerable cross-section(e.g. in the cm² range) in order to prevent an excessive heating of thebusbars. Electrical components, in particular capacitors, must beconnected to these busbars in order to enable the filtering out of thehigh-frequency interferences. The transition impedances (ohmicresistances, parasitic inductances) arising when connecting thecapacitors must, in addition, be as small as possible.

Hitherto, the connecting of the electrical filter components (inparticular capacitors) is performed by a welding of the connectionregions of the capacitors on the busbars, in particular on busbarregions which have previously been prepared through suitable materialprocessing (e.g. drilling or respectively milling) for a welding-onprocess, in order to only enable a fusing of the thinly formedconnection regions with the busbar. This is, on the one hand,time-consuming and cost-intensive, but on the other hand error-prone,because the quality of the electrical contact depends significantly onthe quality of the welded connection, which is subject to considerablevariations.

Proceeding herefrom, it is an object of the invention to provide afilter arrangement which is able to be produced in a time- andcost-efficient manner and, moreover, enables a reliable electricalcontacting of the filter components.

SUMMARY OF THE INVENTION

According to a first aspect, the invention relates to a filterarrangement including a first busbar, a second busbar, and a carrierelement, on which at least one filter component, in particular anelectrical capacitor, is arranged. The one filter component iselectrically connected to the busbars. The electrical connection of theat least one electrical filter component to at least one of thesebusbars takes place through mechanical clamping of the carrier elementbetween the first and second busbar.

The filter arrangement according to the invention offers the keyadvantage that the electrical connection between busbar and filtercomponent can be produced simply and at a favorable cost through themechanical mounting. Thereby, in particular, a welding of the connectionregions of the filter components on the busbars can be avoided. Thisleads, on the one hand, to a reduction of contacting faults, and on theother hand to cost advantages in the production of the filterarrangement.

In a preferred example embodiment, the busbars run parallel to oneanother and are arranged one above the other. Thereby, a carrierelement, arranged between the busbars, can be fixed by bracing thebusbars against one another, and the electrical contacting betweenbusbar and filter component is realized by pressing of contact sectionsagainst each other during mechanical bracing.

In a preferred example embodiment, the carrier element is configuredstrip-shaped. It can have, in particular, a width (measured in thedirection of the longitudinal axis of the busbars) which is smaller thanthe length (measured transversely to the longitudinal axis of thebusbars) of the carrier element. The strip-shaped carrier element can bearranged between the busbars in order to be braced mechanically betweenthese.

In a preferred example embodiment, a longitudinal axis of the carrierelement runs transversely, in particular perpendicularly to thelongitudinal axis of the busbars. In the region in which the busbars andthe carrier element intersect, the electrical contacting of the busbarsmay occur for the purpose of the electrical coupling with the at leastone filter component.

In a preferred example embodiment, the carrier element protrudeslaterally on both sides of the busbars and on the protruding regionsrespectively a filter component, in particular an electrical capacitor,is provided. The protruding regions serve thereby as connection regionsfor the filter components. Thereby, the electrical lines between busbarand filter component can be kept short.

In a preferred example embodiment, a first filter component, inparticular an electrical capacitor, couples the first busbar with acomponent having an electrical reference potential. The electricalreference potential can have, in particular, earth potential. Thereby,high-frequency interferences present on the first busbar can be divertedvia the filter component and thereby filtered out.

In a preferred example embodiment, a second filter component, inparticular an electrical capacitor, couples the second busbar with acomponent having an electrical reference potential. The electricalreference potential can have, in particular, earth potential. Thereby,high-frequency interferences present on the second busbar can bediverted via the filter component and thereby filtered out.

Preferably, the first and second busbar are coupled with identicallydimensioned filter components. These are preferably arrangedsymmetrically to one another, in particular mirror-symmetrically to thelongitudinal axis of the busbars. Thereby, an interference suppressionof both busbars against common-mode signals (common-mode filtering) canbe obtained.

In a preferred example embodiment, the electrical connection between thebusbar and a conducting region arranged on the carrier element isachieved via a contact section (contact spring) having at least onecontact region configured in a spring-like manner. This contact regionconfigured in a spring-like manner can be at least partially elasticallydeformed or respectively compressed when clamping the carrier elementbetween the busbars. Thereby, an improved electrical contacting of thebusbars can be achieved.

In a preferred example embodiment, the contact section has a pluralityof contact tongues. The contact tongues can protrude at least partiallyupwards or else upwards and downwards in relation to a central plane ofthe contact section. The simultaneous upward and downward protruding ofthe contact tongues is achieved for example in that these are preferablyat least partially turned along their longitudinal axis, so that edgeregions protrude upwards and downwards with respect to the central planeof the contact section. The turning of the contact tongues, for examplebefore the clamping between the carrier element and the busbar, can bebetween 30° and 60°, for example between 40° and 50°, in particularapproximately 45°. This turning angle can then be at least partiallyreduced through the clamping between the carrier element and the busbar.Alternatively, the contact section can also have different elasticallydeformable contact regions, for example in the form of a contact regionin the shape of a spiral spring.

In a preferred example embodiment, at least one spacer is providedbetween the carrier element and the busbar in the region of the contactsection, the spacer limiting the deformation of the contact regionconfigured in a spring-like manner. Thereby, it is achieved that thecontact region configured in a spring-like manner deforms only to acertain extent, independently of the force by which the busbars arebraced against one another, and can not be pressed completely againstthe carrier element.

In a preferred example embodiment, a contact section is provided at thecarrier element at two carrier element sides lying opposite one another.Thereby, by means of the clamping of the carrier element, a simultaneouselectrical contacting of the respective busbars can take place, forexample a first busbar is electrically connected by means of a contactsection on the underside, and a second busbar is electrically connectedby means of a contact section on the upper side.

In a preferred example embodiment, the carrier element is a printedcircuit board comprising an electrically insulating printed circuitboard carrier and a plurality of electrically conductive conductor pathregions. Via the conductor path regions, the electrical contacting isobtained between busbar and capacitor or respectively between capacitorand a component having reference potential (in particular earthpotential). The conductor path regions may extend over the entire widthor substantially the entire width of the printed circuit board (inparticular >80%). Thereby, an optimized diverting of the interferencesis achieved.

In a preferred example embodiment, the carrier element has a carrier ofan electrically non-conducting material, and punched sheet metal partsarranged thereon. The punched sheet metal parts serve here for therespective electrical contacting of the filter component toward thebusbar and toward the component lying at reference potential. Thereby,the production costs of the filter arrangement can be further reduced.

In a preferred example embodiment, the contact region, configured in aspring-like manner, is provided in one piece on a punched sheet metalpart connecting the busbar to the filter component. In other words, thecontact region, configured in a spring-like manner, forms an integralpart of a punched sheet metal part situated for contacting betweenbusbar and filter component. Thereby, a soldering of a contact elementto the punched sheet metal part can be avoided, which leads to lowtransition resistances and thereby to improved filter characteristics.

In a preferred example embodiment, the filter arrangement comprises aplurality of carrier elements, the carrier elements being spaced fromone another along the busbars, each carrier element comprising at leastone filter component. Between these carrier elements a choke can beprovided, which is formed by a ring-shaped magnet core or respectivelyby a wound strip core, in particular a nanocrystalline strip core. Thechoke can have in particular an inner opening which is adapted to thecross-section of the busbars, clamped against one another, such that thechoke is able to be slid onto the busbars. Through the inductive effectof the magnet core on the busbar, the effect of a choke is achieved.

According to a further aspect, the invention relates to a method forproducing a filter arrangement comprising a first busbar and a secondbusbar and a carrier element. At least one electrical filter componentis arranged on the carrier element and the electrical filter componentis electrically connected to at least one of the busbars. The at leastone electrical filter component is electrically connected to at leastone of these busbars through mechanical clamping of the carrier elementbetween the first and second busbars.

“Filter component” in the sense of the present invention is understoodas any electrical component which can be used for the interferencesuppression of busbars. Filter components can be, in particular,capacitors, but can also be inductances or electrical resistors.

The expressions “approximately”, “substantially” or “about” in the senseof the invention mean deviations from the respectively exact value by+/−10%, preferably by +/−5% and/or deviations in the form of changeswhich are insignificant for function.

Further developments, advantages and application possibilities of theinvention will also emerge from the following description of exampleembodiments and from the figures. Here, all the features which aredescribed and/or represented visually are basically a subject of theinvention individually or in any desired combination, irrespective oftheir grouping in the claims or in their back references. Also, thecontent of the claims is made a constituent part of the description.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained further in the following with the aid of thefigures in example embodiments. There are shown:

FIG. 1 by way of example, a first embodiment of a filter arrangement ina perspective view;

FIG. 2 by way of example, a sectional illustration of the filterarrangement along the section line X-X shown in FIG. 1;

FIG. 3 by way of example, the clamping region, marked by the dashedcircle in FIG. 2, between busbar pair and carrier element, in a detailillustration;

FIG. 4 by way of example, an illustration of the upper side of thecarrier element with capacitors provided thereon;

FIG. 5 by way of example, an illustration of the underside of thecarrier element with capacitors provided thereon;

FIG. 6 by way of example, a second embodiment of a filter arrangement ina perspective view;

FIG. 7 by way of example, a sectional illustration of the filterarrangement along the section line X-X shown in FIG. 6;

FIG. 8 by way of example, the clamping region, marked by the dashedcircle in FIG. 7, between busbar pair and carrier element, in a detailillustration;

FIG. 9 by way of example, an illustration of the upper side of thecarrier element according to the second example embodiment, withcapacitors provided thereon;

FIG. 10 by way of example, an illustration of the underside of thecarrier element according to the second example embodiment, withcapacitors provided thereon; and

FIG. 11 by way of example, a schematic block diagram of an examplefilter arrangement for the filtering out of interferences.

DETAILED DESCRIPTION OF THE INVENTION

FIGS. 1 to 5 show a first example embodiment of a filter arrangement 1in different views. The following description of the filter arrangement1 is made with reference to a Cartesian coordinate system with axesstanding perpendicularly to one another, namely an x-axis, a y-axis anda z-axis. The filter arrangement 1 comprises a busbar pair with a firstbusbar 2 and a second busbar 3. In the illustration according to FIG. 1,only the first busbar 2 is shown. It shall be understood that more thantwo busbars can be provided for the formation of the filter arrangement1.

The busbars 2, 3 of the filter arrangement 1 build, for example, apositive and a negative electrical conductor, which connects an energystorage unit, for example an electrical battery, to an electricalconsumer, for example an electric motor. In the shown exampleembodiment, the busbars 2, 3 are arranged one above the other inz-direction and run with their longitudinal axes (LAS) parallel to oneanother in y-direction. Preferably, the busbars 2, 3 are configured soas to be semicircular in cross-section and are arranged with their flatsides spaced apart, facing one another, so that the busbars 2, 3,arranged one above the other, form a busbar pair which is circular incross-section. The busbars 2, 3 may be partially spaced by suitableinsulating materials.

For interference suppression of the busbars 2, 3, the filter arrangement1 comprises a carrier element 4 on which at least one capacitor 5, 6 isprovided. In the shown example embodiment, the carrier element 4 isconfigured in a strip-like manner, wherein the width of the carrierelement 4 is smaller than the length of the carrier element 4 along itslongitudinal axis (LAT). This carrier element 4 is arranged between thetwo busbars 2, 3 such that the longitudinal axis (LAT) of the carrierelement 4 runs transversely, in particular perpendicular, to thelongitudinal axis (LAS) of the busbars 2, 3 (in x-direction in the shownexample embodiment). The fixing of the carrier element 4 between thebusbars 2, 3 is realized by mechanical clamping of the carrier element4. Here, an upper side, of flat configuration, of the lower first busbar2 abuts with respect to the underside of the carrier element 4, and anunderside, of flat configuration, of the upper second busbar 3 abutswith respect to the upper side of the carrier element 4.

The carrier element 4 is arranged with respect to the first and secondbusbar 2, 3 such that two carrier element regions 4 a, 4 b, of identicalor substantially identical length, protrude from the busbar pair towardsdifferent sides. By way of example, the first carrier element region 4 aprotrudes towards the left side, the second carrier element region 4 bprotrudes towards the right side. The first capacitor 5 is provided hereat the first carrier element region 4 a, and the second capacitor 6 isprovided at the second carrier element region 4 b. Thereby, a filterarrangement 1 is achieved which is mirror-symmetrical or substantiallymirror-symmetrical in relation to the longitudinal axis (LAS) of thebusbars 2, 3. As shown in the example embodiment according to FIG. 1,the capacitors 5, 6 can be arranged hanging, i.e. protruding downwardsin the direction of the first busbar 2, on the carrier element 4.

In order to couple the busbars 2, 3 electrically to the capacitors 5, 6for the purpose of interference suppression of the busbars 2, 3,electrically conductive regions are provided respectively on the upperside 4′ and on the underside 4″ of the carrier element 4. In the exampleembodiment shown in FIGS. 1 to 5, the carrier element 4 is formed by aprinted circuit board 4.1 on which a plurality of conductor path regions4.2 are provided on the upper side 4′ and on the underside 4″.

As can be seen in particular in FIGS. 3 to 5, a contact section 8′, 8″can be provided respectively on the upper side 4′ and on the underside4″ of the carrier element 4. This contact section 8′, 8″ is electricallycoupled respectively via conductor path regions 4.2 to the capacitor 5,6. Thereby, an electrical connection can be formed between the busbars2, 3 and the capacitors 5, 6. Thus, for example, a contact section 8′ isprovided on the upper side 4′ of the carrier element 4, by means ofwhich the second busbar 3 is electrically connected to the firstcapacitor 5. On the underside 4″ of the carrier element 4 a contactsection 8″ is provided by means of which the first busbar 2 iselectrically connected to the second capacitor 6. It shall be understoodthat also the reverse connecting possibility exists.

The contact sections 8′, 8″ have a contact region 8.1 configured in aspring-like manner. In the shown example embodiment, the contact region8.1 is configured in a comb-like manner with a plurality of contacttongues 8.2 protruding upwards or else upwards and downwards. Thesecontact tongues 8.2 are deformed elastically or respectively deformed inthe direction of a horizontal alignment on the clamping of the carrierelement 4 between the two busbars 2, 3, so that the contact tongues 8.2are pressed, through the restoring forces, against the busbars 2, 3.Thereby, a low-ohmic transition resistance occurs between the conductorpath regions 4.2 and the contact sections 8′, 8″, and thereby alow-ohmic connection of the capacitors 5, 6 to the busbars 2, 3 isachieved, namely without using of a soldered or welded connection.Alternatively to the contact tongues, other contact region variantsconfigured in a spring-like manner are also possible, for example acontact region 8.1 with contact elements in the manner of a spiralspring.

In the case of using a printed circuit board 8.1, the contact section8′, 8″ can be formed, for example, by a contact spring element solderedonto a conductor path region 4.2. Alternatively, it is possible that thecontact spring element is merely placed loosely onto the conductor pathregion 4.2 or is glued thereto. The electrical contacting between theconductor path region 4.2 and the respective busbar 2, 3 is realized bythe contact section 8′, 8″ such that a contact region 8.1, configured ina spring-like manner, is used, which electrically contacts the conductorpath region 4.2 as well as the busbar 2, 3, for example, throughupwardly and downwardly protruding contact tongues 8.2. The protrudingupwards and downwards can be achieved in particular by a turning through45° or substantially 45° around the longitudinal axis of the contacttongues 8.2.

For diverting the interferences, the capacitors 5, 6, as can be seen inparticular in FIG. 2, are electrically coupled, by a connection regionfacing away from the busbars 2, 3, to a component 7 which is formed, forexample, by a housing made of an electrically conductive material. Thiscomponent 7, for example, has reference potential, in particular earthpotential. The electrical connection to the component 7 can be realizedby a screw connection (or similar) and a conductor path region 4.2,which electrically connects the connection region of the capacitor 5, 6to the component 7. The screw connection can, for example, also causethe fixing of the free end of the carrier element 4. As shown in FIGS. 1and 2, one or more brackets 10 can be used in order to fix the busbars2, 3.

As can be seen in particular in FIG. 3, the contact tongues 8,2 can beturned at least partially with respect to the x-y plane, and namely inparticular about a rotation axis running parallel to the y-axis.Thereby, edge regions of the contact tongues 8.2 protrude upwards withrespect to the remaining regions of the contact tongues 8.2, wherebywhen clamping the busbars 2, 3 against one another, an abutting of thebusbars 2, 3 at these edge regions is achieved. Thereby, the electricalcontact between the contact sections 8, 8′ and the busbars 2, 3 isfurthermore improved.

In the region of the contact section 8′, 8″, a spacer 9 can be provided.This spacer 9 can, for example, run in a frame-like manner around therespective contact section 8′, 8″ or else can merely be providedpointwise or partially around the contact section 8′, 8″. The height ofthe spacer 9 can be selected such that the deformation of the contacttongues 8.2 is limited, i.e. the contact tongues 8.2 are not completelypressed against the carrier element 4 through the clamping of thebusbars 2, 3, but rather remain at least partially spaced aparttherefrom (see FIG. 3).

In case that the component 7 is formed by a housing configured in acup-like manner, this housing can be cast with a suitable castingmaterial, for example, an epoxy resin or similar. Thereby, thecapacitors 5, 6 and, if applicable, the carrier element regions 4 a, 4 bcan be protected against moisture and vibrations.

FIGS. 6 to 10 show a further example embodiment of a filter arrangement1 according to the invention. Here, the illustration according to FIG. 6corresponds to the illustration in FIG. 1, the illustration according toFIG. 7 corresponds to the illustration in FIG. 2, etc. Only thedifferences of the second example embodiment compared to the firstexample embodiment are explained below. Otherwise, the previousstatements also apply to the second example embodiment.

The essential difference between the first and second exampleembodiments lies in the configuration of the carrier element 4. In thesecond example embodiment, the carrier element 4 is formed by a carrier4.3 of an electrically non-conducting material on which a plurality ofpunched sheet metal parts 4.4 (also designated as a punched grid) arearranged. Here “punched sheet metal parts” are understood as any sheetmetal parts which are produced by punching or else by other materialprocessing, for example laser cutting. These punched sheet metal parts4.4 are arranged on the carrier 4.3 by suitable connecting techniques.Thus, for example, the punched sheet metal parts 4.4 can be pushed in orrespectively inserted into recesses provided on the carrier. Fixing byinjecting around, by casting or bonding is also conceivable.

As can be seen in FIGS. 6 and 7, the connection regions of thecapacitors 5, 6 can be electrically connected to the punched sheet metalparts 4.4, for example, by soldering in order to guarantee a contactingof the capacitors 5, 6 toward the busbars 2, 3 on the one hand andtowards the component 7 on the other hand.

The contact sections 8′, 8″ can be advantageously formed on the punchedsheet metal parts, and namely in particular in one piece. For example, acontact region 8.1 with contact tongues 8.2 can be produced by punchingor cutting. Thus in particular the punched sheet metal parts 4.4 have acontact region 8.1 with contact tongues 8.2 electrically connecting thecontact regions lying adjacent to the busbars 2, 3, to the busbars 2, 3.Through the one-piece configuration of the contact sections 8′, 8″, itis achieved that no soldering points are necessary between the contactsections 8′, 8″ and thereby no transition resistances caused by thesoldering sites occur.

As already stated in connection with the first example embodiment,spacers 9 can be provided in the region of the contact sections 8′, 8″.As can be seen in particular in FIGS. 7 and 8, these can be formed inparticular in one piece on the carrier 4.3. Alternatively, the spacers 9can also be arranged through suitable connecting methods, for examplebonding to the carrier 4.3.

FIG. 11 shows by way of example a schematic block diagram of a filterarrangement 1, which can be formed according to the previously describedexample embodiments. The positive (+) and negative (−) conductor shownin FIG. 11 is formed by the busbars 2, 3. A plurality of capacitors C1to C5 are connected to these busbars 2, 3 in order to achieve aninterference suppression of the busbars 2, 3. The capacitor C1 iselectrically connected by a first connection region (Pin) to the firstbusbar 2 and by the second connection region to the second busbar 3. Thecapacitor C1 (X-capacitor) forms a so-called differential-mode filter 12by means of which high-frequency voltage differences between the busbars2, 3 (push-pull disturbing voltages) are compensated.

The capacitors C2, C3 together with the inductor L2 and the capacitorsC4, C5 together with the inductor L3 form so-called common-mode filters11, 11′, respectively, by means of which common-mode interferences,which occur in the same phase at the busbars 2, 3, are filtered out. Forthis, the capacitors C2 to C5 are connected by a connection region tothe reference potential, in particular earth.

The electrical contacting of the capacitors 5, 6 takes place, aspreviously described, through a mechanical clamping of a carrier element4 between the busbars 2, 3.

The inductors L1, L2, L3 can be, in particular, mounted onto the busbarpair formed from the busbars 2, 3. The inductors L1, L2, L3 can be, inparticular, magnet cores configured in a ring-like manner, consisting ofa nanocrystalline strip material. Thereby, the effect of the inductorsL1, L2, L3 can be significantly increased.

The magnet cores and the carrier elements 4 having the filter componentscan be mounted here one after another, in particular alternately oneafter another, onto the busbar pair, so that a simple mounting of thefilter arrangement 1 is possible. The magnet cores can be integrallyformed, i.e. not separable.

The invention was described above in example embodiments. It shall beunderstood that numerous changes and modifications are possible, withoutthereby departing from the inventive idea on which the invention isbased.

It was assumed above that the capacitor 5, 6 is coupled directly to thecomponent 7 situated at reference potential. It shall be understoodthat—depending on the required filter characteristics—also a pluralityof filter components (filter component group) or respectively filterunits (with a complex filter structure) can be provided between thebusbar and the component 7, which is at reference potential, in order toachieve a desired filter effect. The electrical contacting of thisfilter component group or respectively of the filter unit in the regionof the busbar takes place, however, via the previously describedmechanical clamping in the region of the busbars.

REFERENCE LIST

-   1 filter arrangement-   2 first busbar-   3 second busbar-   4 carrier element-   4′ upper side-   4″ underside-   4 a, 4 b carrier element region-   4.1 printed circuit board-   4.2 conductor path region-   4.3 carrier-   4.4 punched sheet metal part-   5 first capacitor-   6 second capacitor-   7 component-   8′, 8″ contact section-   8.1 contact region-   8.2 contact tongues-   9 spacer-   12 differential-mode filter-   11 common-mode filter-   LAS longitudinal axis of the busbar-   LAT longitudinal axis of the carrier element

The invention claimed is:
 1. A filter arrangement comprising: a housingcomponent having an electrical earth reference potential; a firstbusbar; a second busbar; and a carrier element arranged between thefirst busbar and the second busbar and on which at least two electricalfilter components are arranged, a first electrical filter component ofthe at least two electrical filter components is electrically connectedto the first busbar and a second electrical filter component of the atleast two electrical filter components is electrically connected to thesecond busbar, wherein an electrical connection of the at least twoelectrical filter components to a respective one of the first busbar andthe second busbar is obtained through a mechanical clamping of thecarrier element between the first busbar and the second busbar, whereinthe electrical connection between the respective one of the first busbarand the second busbar and a conducting region situated on the carrierelement occurs using at least one contact section having at least onecontact region configured in a spring-like manner, wherein the firstelectrical filter component couples the first busbar within the housingcomponent, and wherein the second electrical filter component couplesthe second busbar within the housing component.
 2. The filterarrangement according to claim 1, wherein the first busbar and thesecond busbar run parallel to one another and are arranged one above theother.
 3. The filter arrangement according to claim 1, wherein thecarrier element is configured in a strip-shaped manner.
 4. The filterarrangement according to claim 1, wherein a longitudinal axis (LAT) ofthe carrier element runs transversely to longitudinal axes (LAS) of thefirst busbar and the second busbar.
 5. The filter arrangement accordingto claim 1, wherein the carrier element protrudes laterally on bothsides of the first busbar and the second busbar, and the at least twoelectrical filter components include the first electrical filtercomponent protruding on a first of the both sides of the first busbarand the second busbar and the second electrical filter componentprotruding on a second of the both sides of the first busbar and thesecond busbar.
 6. The filter arrangement according to claim 1, whereinthe at least one contact section comprises a plurality of contacttongues protruding upwards or upwards and downwards.
 7. The filterarrangement according to claim 1, wherein a spacer is provided betweenthe carrier element and the respective one of the first busbar and thesecond busbar in a region of the contact section in a manner limitingdeformation of the at least one contact region configured in thespring-like manner.
 8. The filter arrangement according to claim 1,wherein the carrier element is a printed circuit board with a pluralityof conductor path regions.
 9. The filter arrangement according to claim1, wherein the carrier element has a carrier of an electricallynon-conducting material, and punched sheet metal parts arranged on thecarrier.
 10. The filter arrangement according to claim 9, wherein the atleast one contact region is provided in one piece on the punched sheetmetal part connecting the respective one of the first busbar and thesecond busbar to at least one of the first electrical filter componentor the second electrical filter component.